Preferred Label : eyelid tarsus;
Uberon definition : The tarsi (tarsal plates) are two comparatively thick, elongated plates of dense connective
tissue, about 2.5 cm. in length; one is found in each eyelid, and contributes to its
form and support. They directly abut the lid margins.;
Uberon synonym : tarsus palpebralis; tarsal plate; tarsal plate of eyelid;
Uberon related term : tarsi; eyelid tarsi;
Uberon Taxon note : In most taxa (birds, mammals, lizards), the tarsal plate is described as a dense,
fibrous connective tissue, possibly including cartilage, present within one or both
of the upper and lower eyelids (Gau- thier et al., 1988; Rieppel, 2000). In humans,
the tarsal plate of the upper eyelid is composed of collagens types I, III, and V,
as well as glycosaminogly- cans (chondroitin sulphate 4 and 6), aggrecan, and cartilage
oligomeric matrix proteins but lacks collagen type II as well as chondrocytes (Milz
et al., 2005). Thus, for humans, the upper tarsal plate represents neither a truly
fibrous nor a truly cartilagi- nous element but instead one that is composed of a
unique transitional tissue (Milz et al., 2005). In many birds, lizards, and Sphenodon
(the tuatara), the upper eyelid has lim- ited mobility and a putative tarsal plate
is instead found within the lower eyelid (Underwood, 1970; Gau- thier et al., 1988).;
Origin ID : 0004772;
UMLS CUI : C0459586;
Automatic exact mappings (from CISMeF team)
- Semantic type(s)
- UMLS correspondences (same concept)
- Uberon cross reference
- has part
- part of
The tarsi (tarsal plates) are two comparatively thick, elongated plates of dense connective
tissue, about 2.5 cm. in length; one is found in each eyelid, and contributes to its
form and support. They directly abut the lid margins.
